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Chemistry4.730 ratings

Periodic Table 3D

See trends rise as 3D towers, then fly into any atom.

General52 ratings

How LLMs Work

Be the model: split text into tokens, guess the next word, set the temperature.

Math4.819 ratings

Programming & CS

Guide a robot with blocks, then write real Python.

Math4.88 ratings

Coordinate Defense

Build at (−3, 4), read the camps, hold the keep.

Math4.6176 ratings

Fruit Fractions

Show me 3/5 of the orange, then see why.

Math4.6121 ratings

Linear Beam

Write the line, fire the laser, light every crystal.

General4.8205 ratings

World Landmarks

Spin the globe and explore famous landmarks up close.

Math4.6335 ratings

Mental Math

Times tables practice that remembers what you know.

Biology4.7202 ratings

Gene to Protein

Crack real disease cases from DNA to protein.

Physics4.7241 ratings

Circuit Builder

Brighter, same, dimmer or off? Call it before the current flows.

General4.8592 ratings

Courtroom

Argue real-feeling cases and win the court over.

History4.667 ratings

Timeline

Drag world events into order and see what else was happening then.

History4.561 ratings

Source Detective

Crack a redacted primary source: when, where, what and who.

English4.6311 ratings

Irregular Verbs

Drive, drove, driven. Type the forms, race the clock, learn the patterns.

Physics4.7169 ratings

Bridge Workshop

Build a bridge, drive a car across and see which piece works hardest.

History4.8902 ratings

History Atlas

Drag through 5,000 years and watch empires rise and fall.

English4.6430 ratings

Word of the Day

One English word a day, its story, and three questions to make it stick.

English4.6896 ratings

Escape Room

English reading practice: the only way out is understanding what you read.

English4.7104 ratings

Sentence Builder

Grammar you can touch: build English sentences from word tiles.

General4.8526 ratings

Pomodoro Timer

Focused study sessions, timed breaks and study sounds.

General4.61,605 ratings

Chess

Guided lessons, puzzles and matches against a coach at your level.

Physics4.82,116 ratings

Rocket Workshop

Build a rocket, launch it and find out what it takes to reach space.

General4.71,056 ratings

Geography

Name the country, pin its capital, pick its flag.

Biology4.811,661 ratings

Human Body Atlas

Explore, isolate, and take apart thousands of anatomical structures.

Biology4.83,314 ratings

Cell 3D

Turn cells in 3D, light up each part and quiz yourself.

Math4.3969 ratings

Guess the Equation

Solve the daily equation in six guesses.

Biology4.62,138 ratings

Build a Cell

Build cells with the right organelles.

Physics4.81,805 ratings

Solar System

Explore the planets, the Moon's phases, and eclipses in one 3D model.

Math4.6500 ratings

Pipes

Rotate the pipes and bring water to every tile in one connected network.

Math4.61,164 ratings

Sudoku

Complete the daily 6×6 or 9×9 logic grid.

General4.5158 ratings

Smart Encyclopædia

Explorable infographics. Click anything to generate the next one.

Chemistry4.81,017 ratings

Virtual Lab

Drop metals into water and watch reactions unfold.

Physics4.61,096 ratings

Logic Gates

Flip the switches so every lamp matches its goal in as few moves as you can.

Math4.61,307 ratings

15 Puzzle

Slide the numbered tiles back into order, lowest to highest.

Chemistry4.7600 ratings

Build an Atom

Build isotopes and ions from subatomic particles.

Math4.2142 ratings

Marbleslides

Type an equation, hit launch, watch the marbles slide into the stars.

Math4.3471 ratings

Nonogram

Reveal the daily picture with row and column clues.

Math4.6155 ratings

Hashi

Connect every island into one network without crossing any bridges.

Physics4.6764 ratings

Scribble Launch

Sketch ramps, seesaws and ropes, and roll the pod into its rocket.

Math4.3310 ratings

Minesweeper

Classic Minesweeper with optional probability hints.

Chemistry4.8331 ratings

3D Molecules

Drag to rotate, toggle lone pairs, and read the geometry and bond angle.

Physics4.5568 ratings

Optics Puzzle

Drag the mirrors so the laser reflects off them and reaches the glowing target.

Math4.4318 ratings

Tower of Hanoi

Move all disks to the right peg — never on a smaller one.

Chemistry4.6176 ratings

pH Mixer

Drip acid or base and watch the pH shift.

Chemistry4.7376 ratings

Ice to Steam

One flask of water — freeze it, boil it, and peek inside at the molecules.

Math4.628 ratings

Recursion Explorer

See each term of a sequence built from the one before — in math and in Python.

Math4.4437 ratings

Fraction Helper

See fractions as pies, bars, and a number line.

Physics4.7240 ratings

Incline Forces

See how gravity, friction, and force interact.

Biology4.4153 ratings

Punnett Square

Cross parents and watch inheritance ratios appear.

Math4.7113 ratings

Proofs without words

See why (a+b)² = a² + 2ab + b² — drag a square apart and let the areas prove it.

Math4.7156 ratings

Graphing

Tune functions and watch the curve change.

Math4.7193 ratings

3D Geometry

Rotate solids, read volume and surface area, and compare equal-volume shapes.

Chemistry4.7275 ratings

Equation Balancer

Balance chemical equations with integer coefficients.

Physics4.6122 ratings

Waves

Drive a string and watch waves reflect.

Math4.797 ratings

Unit Converter

Convert units across length, mass, time, and more.

Physics4.8108 ratings

Double Pendulum

Watch chaos emerge from two coupled pendulums.

Physics4.666 ratings

Magnetic Field

Drag magnets and wires, switch views, and read the field with a compass.

Math4.6164 ratings

Unit Circle

Drag an angle and watch sine and cosine move.

Math4.780 ratings

Vectors

Draw vectors in the plane and in space, and watch every product work itself out.

Physics4.886 ratings

Bending Light

Aim a laser and watch refraction bend the beam.

Math4.741 ratings

Interest Lab

Same deposit, same rate, two outcomes. See where compound interest wins.

Physics4.780 ratings

Color Models

Mix light, ink, and hue — watch RGB, CMYK, and HSV make the very same color.

Physics4.8154 ratings

Projectile Motion

Launch a ball and watch gravity shape the arc.

Math4.942 ratings

Probability Playground

Flip, roll, spin, drop. Theory vs reality, live.

Physics4.670 ratings

Optics Bench

Pick a lens or mirror, drag the object, and watch the rays form the image.

Math4.759 ratings

Function Analysis

Type any function and explore f, f′, f″ and its integral side by side.

Physics4.868 ratings

Pendulum Lab

Swing a pendulum and watch energy trade places.

Math4.6129 ratings

Plane Geometry

Explore 2D shapes with live formulas.

Math4.852 ratings

Derivative Explorer

Drag along a curve and watch the tangent slope.

Math4.7105 ratings

Geometry Theorems

Explore classic theorems with draggable proofs.

Math4.817 ratings

Solids of Revolution

Design an axial section, spin it, and work out V and S.

Physics4.740 ratings

Doppler Effect

Move a source past a listener and watch the wavefronts compress and stretch.

Math3.735 ratings

Pathfinding

Compare BFS, DFS, Dijkstra, and A* on a grid maze.

Math4.436 ratings

Sorting Visualizer

Watch six classic sorting algorithms race side by side.

Physics4.650 ratings

Diffraction & Interference

Set slit count, wavelength and spacing, then read the maxima off the screen.

Math4.637 ratings

Conic Sections

Tilt the plane and watch the conic shape change.